diff --git a/nixos/modules/services/home-automation/home-assistant.nix b/nixos/modules/services/home-automation/home-assistant.nix
index d576af2fbb4f..7f7a76ed19da 100644
--- a/nixos/modules/services/home-automation/home-assistant.nix
+++ b/nixos/modules/services/home-automation/home-assistant.nix
@@ -157,7 +157,7 @@ in {
       default = [];
       example = literalExpression ''
         with pkgs.home-assistant-custom-components; [
-          prometheus-sensor
+          prometheus_sensor
         ];
       '';
       description = lib.mdDoc ''